Gemstone



FIG. 1 is a perspective view of my new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a left side view thereof, the right side, front and rear views being identical;

FIG. 4 is a top view thereof;

FIG. 5 is a left side view of a second embodiment of my new design, the right side, front and rear views being identical, having the bottom view shown in FIG. 2 of the first embodiment and having the perspective view shown in FIG. 1 of the first embodiment;

FIG. 6 is a top view thereof;

FIG. 7 is a left side view of a third embodiment of my new design, the right side, front and rear views being identical, having the bottom view shown in FIG. 2 of the first embodiment and having the perspective view shown in FIG. 1 of the first embodiment;

FIG. 8 is a top view thereof;

FIG. 9 is a left side view of a fourth embodiment of my new design, the right side, front and rear views being identical, having the bottom view shown in FIG. 2 of the first embodiment and having the perspective view shown in FIG. 1 of the first embodiment; and,

FIG. 10 is a top view thereof. 

The ornamental design for a gemstone, as shown and described. 